




class Point(object):
    def __init__(self, latitude=0.0, longitude=0.0):
        self.latitude = float(latitude)
        self.longitude = float(longitude)
        
    def offset(self, latitude=0.0, longitude=0.0):
        return Point(self.latitude + latitude, self.longitude + longitude)
        
    def __str__(self):
        return "{0:1.5f},{1:1.5f}".format(self.latitude, self.longitude)